import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
    home: Scaffold(
      appBar: AppBar(
        title: const Text("Column Widget Demo"),
      ),
      body: SingleChildScrollViewWidget(),
    ),
  ));
}

class SingleChildScrollViewWidget extends StatelessWidget {


  @override
  Widget build(BuildContext context) {
    const String str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    return Scrollbar(
      child: SingleChildScrollView(
        padding: const EdgeInsets.all(16.0),
        child: Center(
          child: Column(
            children: str.split("").map((e) => Text(e, textScaleFactor: 2.0,)).toList(),
          ),
        ),
      ),
    );
  }
}
